US2233936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental appliance
Assignee: Individual
•
Filing: 1940-03-28
•
Granted: 1941-03-04
•
Expires: 1960-03-28
Abstract
No abstract record available.
Inventors
- 👤 Howard R Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:16
CPC Classifications
A; A46; A46B; A46B15/00; A46B15/0055; A46B15/0069; A46B15/0071; A61; A61C; A61C15/00; A61C15/04; A61C15/046
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-03-03 | 1944-09-02 | 1945-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-03 | 1948-09-02 | 1949-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-03 | 1952-09-02 | 1953-03-04 | $7700.00 | Window Closed / Lapsed |